Water-heater



l Patented Feb. [4, |899. J. T. HELMS & B. A. KELLER. v

WATER HEATER.

(Application led Jun 6, 1898.)

2 sheets-*sheet l.

.unicum Pnzns co. vnomurua. wAsNmc-Yon. D. c.

No. 6|9,5sa.

(N0 Mogel.)

l I I WTNESSES.

No. 6|9,568. l Patented Feb.- I4, |8919.

v J. T. HELMS &. R. A. KELLER.

WATER -HEATER.

(Application led June 6, 1898.) y (No Model.) 2 Sheets-Sheet 2.

fn: mums Pinks co. Puumo.. wAsmNoTou. D. c.

UNITED STATES PATENT OFFICE.

JAMES T. HELMS -AND ROBERT A. KELLER, OF KNOXVILLE, TENNESSEE.

p WATER-HEATER.

SPECIFICATION forming part of Letters Patent No. 619,568,"dated February 14, 1899.

Application filed June 6, 1898. Serial No. 682,706. No model.) Y

To all whom t may concern,.-

Be it known that we, JAMES T. HELMs and ROBERT A. KELLER, of Knoxville, in the county of Knox and State of Tennessee, have invented a new and Improved Water-Heater, of which the following is a full, clear, and exact description.

The object of the invention is to provide a new and improved water-heater which is simple and durable in construction, very effective in operation, and more especially designed for supplying steam-boilers with hot water heated direct from the burning fuel in the re-box.

The invention consists of novel features and parts and combinations of the same, as will be fully described hereinafter and then pointed out in the claims.

Reference is to be had to the accompanying drawings, forming a part of this specification, in which similar characters of reference indicate corresponding parts in all the figures.

Figure l is a longitudinal sectional elevation of the improvement on the line l l of Fig. 2. Fig. 2 is a front elevation of the same. Fig. 3 is a sectional plan view of the same on the line 3 3 of Fig. l, and Fig. 4 is a transierselsection of the same on the line `4 4 of The improved water-heater, as shown in the drawings, is applied to and forms part of the furnace for a boiler A, supported at its rear end on the usual casting B, set on a wall C', forming part of the brickwork C of the furnace, the front end of the boiler A being supported in the front D, made hollow and formed with a smoke-box D', into which open the smoke-dues of the boiler A. The smoke-box D is provided without an outlet D2, connected with a chimney, for carrying off the smoke and gases. into a water and steam compartment D3, into the lower end of which opens a water-supply pipe E, connected with a pump or other suitable source of water-supply, the pipe being provided with a valve E, controlled from a iioat F, arranged in the upper part of the compartment D3 and held 0n arm F', secured to a shaft F2, mounted to turn in suitable bearings in the front D. One outer end of the shaft F2 is provided with an angular arm F3, connected by a link F4 with an arm E2 on the The front D is further formed,

stem of the valve E', so that when the float F swings upward as the water reaches a normal level in the said compartment D3 then the valve E is closed automatically by the connections mentioned to shut od the supply of water to the water-heater.

The front D is provided with the usual fuelsupply doors G, leading to the fire-box under the forward part of the boiler A, and the front is also provided with an ash-pit door H, leading to the ash-pit. The water-compartment D3 of the front D is connected near its lower end by downwardly-extending pipes I -with the transverse front tubes J of the grate J forming the bottom of the iire-box and the top of the ash-pit. The transverse tubes J are connected by longitudinal pipes J2 with a rear transverse tube J3, likewise forming part of the grate J, and connected by a pipe J 4 with the water-compartment of the boiler A, so as to supply the latter with heated water. The tubes J and J3 are supported on lugs or brackets D5 and C2, of which the bracket D5 forms an integral part of the front D and the bracket O2 forms part of the bridge-wall O3.

,The lower end of the water-compartment D3 of the frontD is connected at each side by a 'pipe K with a water-box L, forming the side for the fire-box of the furnace, each box being connected at its top by a return-pipe K with the compartment D3 near the normal waterlevel thereof, as is plainly indicated in Fig. 4.

It will be seen that by the arrangement described the burning fuel on the grate J heats the water circulating through the grate, and the fuel also heats a portion of the front D to heat the water contained in the compartment D3. The smoke and gases after passing -through the smoke-fines of the boiler A pass into the iire-box D' to again give off heat to the Water in the compartment D3, surrounding the smoke-box, so that the Water is highly heated' in the front D by the burning fuel. ,The water already heated in the furnace-front D passes from the latter into the side boxes L by way of the pipes I to be further heated by the burning fuel, as the side boxes L form part of the sides of the fire-box, and the Water returns to the compartment D3 by the returnpipes K'. The water thus highly heated in the front D iinally passes into the grate J and passes from the transverse tube J through IOO the pipes J2 into the tube J3, to pass from the latter by the pipe J 4 into the water-compartment of the boiler A in an extremely highlyheated condition. The water-boxes L form separate sections of the furnace and may be connected by slides with the frontD and fastened in place in the brickwork by stays, as indicated in the drawings. Any steam generated in the water-compartment D3 can be carried off through a suitable pipe N for work in a motor or to a condenser connected with the supply-pump.

The smoke-box D is provided with a suitable door D4 for obtaining access to the smoke-flues of the boiler A for cleaning and other purposes.

In order to properly manipulate or rake the burning fuel on the grate J, longitudinal rakes O are provided in the form of plates, formed at the top with notches, as is plainly indicated in Fig. l, and adapted to pass up between the adjacent longitudinal pipes J 2 to rake the fuel. Normally the rakes O rest with their serrated edges below the pipes J 2, as is plainly indicated in Fig. l, each plate being connected by linksPP with bell-crank levers Q Q', secured to transverse shafts journaled in suitable bearings supported by the grate. The end bell-crank levers Q Q are connected by links Q2 Q3 with an intermediate lever Q4, so that the several bellcrank levers work in unison to impart a strong up-and-down movement to the rakes O. One of the forward bell-'crank levers Q is connected by a linkR with ashaking-lever S, fulcrumed on the outer face of the front D and under the control of the operator, so that when the lever is swung forward orback- Ward the several bell-crank levers Q Q are actuated to impart an up-and-down movement to the rakes O for the purpose above described.

Manholes T are arranged on the face of the front D, at the lower end thereof, anda gage U on the said front indicates the level of the water in the compartment D3.

It will be seen that by the arrangement described the heater forms a part of the furnace, but is completely independent of the boiler A, and by circulating the water in the manner described the water finally passes in a highly-heated condition into the boiler. By having the rakes O arranged as shown the operator can readily rake or stir the fuel without opening the door. The transverse tube J is provided with screw-plugs J 5 at the front and in alinement with the pipes J 3 to permit of conveniently cleaning the latter.

Havingthus fully described our invention, we claim as new and desire to secure by Letters Patent- 1. In a water-heater, a hollow front forming a water and steam compartment and provided with a smoke-box within the same and into which the smoke-dues of the boiler open, said smoke-box being provided with an outlet extending out through the said front, and side boxes secured to the front and communicating with the same, said boxes forming the sides of the fire-box, substantially as described.

2. In a water-heater, a hollow front forming a water and steam compartment and provided mwith a smoke-box within the same and into which the front end of the boiler projects, and by which it is supported, said smoke-box being provided with an outlet extending out through the top of the front, and side boxes removably secured to the front and with the top and bottom of which the front communicates, said boxes forming the sides of the fire-box, substantially as described.

3. In a water-heater, a hollow front serving as a support for the front end of a boiler, said front being provided with a smoke-box into which open the smoke-fines of the boiler, and with a steam and water compartment, side boxes secured to the front and with the top and bottom of which the front communicates, said boxes forming the sides of the tirebox, and a hollow grate adapted to be connected with a boiler and with which the front communicates, substantially as described.

4. AA water-heater, comprising a furnacefront adapted to support the front end of a boiler and provided with a smoke-box into which open the smoke-ilues of the said boiler, and with a water and steam compartment connected with a water-supply, a water-box at each side of the tire-box and forming the sides thereof, said boxes being connected at top and bottom with the water and steam compartment of the front, and a tubular grate formed of front and rear transverse tubes,- and longitudinal pipes connecting the tubes, the front tube being connected with the water and steam compartment of the furnacefront and the rear tube with the boiler, subL stantially as described.

5. In a water-heater, the combination `with a boiler, of a hollow front provided with a smoke-box into which the front end of the boiler projects and by which the said front end of boiler is supported, and with a water and steam compartment connected with a water-supply, side boxes secured to the front and forming the sides of the fire-box, said boxes communicating at top and bottom with the steam and water compartment of the front, and a hollow grate having its rear end connected with the boiler and its front end with the steam and water compartment of the front, substantially as described.

6. In a water-heater, the combination with a boiler, and a hollow grate having its rear end in communication with the boiler, of a hollow front provided with a smoke-box into which the front end of the boiler projects and by which the said front end of the boiler is supported, and with a water and steam compartment surrounding the smoke-box, the said front being connected with a water-supply ICG IIO

and provided with fuel and ash-pit doors, side with the front end of the hollow grate, subboxes having their front ends secured to the stantially as herein shown and described.

front, said boxes forming the sides of the fire- JAMES T. HELMS.

box, pipes connecting the tops and bottoms ROBERT A. KELLER. 5` of the side boxes with the water and steam Witnesses:

compartments of front, and pipes connecting M. A. BEST,

the Water and steam compartment of the front W. S. KELLER. 

